Double-lever gate lock



@ct f) 9 39230 F. 5. LJVINGSTON DOUBLE LEVER GATE LOCK Filed $6131. 17. 1921 0 mar:

INVENTOFZ: FRANK 5. LIVINGSTON,

Patent-ed @ct. h, i923.

sneeze FRAIEK S. LIV'INGSTQN. OF LOS AITGELES CALIFORNIA, ASSEGNOR TO SNOXV Ii IAl l'll- FACTURING CGMIPANTZ, 0.? LOS ANGELES, CALIFORNIA.

DOUBLE-LEVER GATE LOCK. i

Application filed September 17, 1921. Serial No. 501,474.

To all whom it may concern:

Be it known that l. FRANK S. liivinesron,

a citizen of the United States. residing at Los Angeles. in the county of Los Angeles and State of California, have invented a new and. useful Double-Lever Gate Look. of which the following is a. specification.

This invention relates to gate-valves and to devices for controlling the passage through gate-valves.

One of the objects of this invention is to provide a simple gatewalve in which only the seat is to be machined, the baseplate or member having lugs to which channelbars are secured to form the guide members for the cover-plate in relation to the seat of the basemeinber.

Another object is to provide a locking lever pivotally' supported on the cover-plate of the valve in about its middle having en gaging ends of wedgelilte shape to engage in the guiding channels of the baseor trains-member to press the cover-plate against the seat in the base-member.

flth'er objects will appear from the following description and appended claims as well as from the accompanying drawing. in which l Fig. l is a front elevation of the complete m device.

Fig. 2 is a cross section through the frame or base-plate on line 22 of Fig. 1.

Fig. 3 is a cross section through the cover plate on line 83 01" Fig. 1.

Fig. & is a cross section through the operating mechanism on line l4 of Fig. l, in slightly enlarged scale.

Fig. 5 is a front elevation of the operatingz lever in slightly modified tor-in.

Fig. 6 is an end view of the engaging end of one of the levers. V

Fig. 7 is an end elevation of a turning knuckle, to be used in combination with the operating lever illustrated in Fig. 8, instead olf the gear-knuckle illustrated in Figs. 1 and v I 7 Fig. 8 is a' frontelevation 01 an. operating lever in slightly modified forni.

Fig. 9 is end elevation of a turning knuckle in a s'till more slightly modified 'form. y

The valve seat 10, surrounding the passage ll of the valve, is provided on the baseplate 12. This base-plate is preferably Inade of east-iron or other similar suitable material requiring little machinework or practically no machine-work beyond the facing of the seat 10. Lugs 13 are provided on the base-plate 12 for securing; the channel bars 14-. The channel bars are preferably of standard rolled material to be cut of a length to reach from the surface to the point where the passage of allow is to be controlled by a gate-valve of this type. In an irrigating system such passage of water is very often quite a distance below the surface. The base-plate is with this arrangernent of a standard type and size. The channel bars are the guideways tor the cover-plate, and any length of bars may easily be secured to the base-plate to reach from the surface to any point belowthe' surface for guiding the cover-plate in suitable relation to the passage and valve-seat in the baseplateo the bars being; broken oil at 15, but it will easily be understood that the bars can be extended indefinitely higher.

The cover-plate 16 is provided withlags 17 of a size to easily slide within the channels 14:. At the points 18, the lugs are interrupted to allow the wedge-like e gaging ends 19 of the operating lever 20 to reach into the channels for pressing the cover-plate 16 against the seat 10, of the base-plate, or eventually pressingtl'ic edges of the cover-plate against the opposite shanks oi? the channels while the wedgeshaped engaging ends 19 of the lever engage with the other shanks, when the cover plate is in a position above the valvesea't. The end-elevation of the wedge-shaped engaging ends is illustrated in Fig. (3. the

edge 91 being of a height to easilyslip' into the channel between the cover-plate and the opposite free shank of the ch nnel while the ed 'e 22 is of a heightto tightly engage or lOCK the cover-plate with the operating lever at any point within the channels. The lugs 17 areof a height together with the seating face 23. see Fig. 3, to allow the covenplate to slip or pass over the seat 10 of the baseplate while the lugs slide within thechannels, the cover-plate being only tightly seated by'an engaging 0t tlieweeg eshaped ends 19 as described above} A boss 24: is provided in about the middle of the cover-plate to pivotally support the O eras ing lever 20. the operating lever being ar} ranged so as to press on the niiddle of the cover-plate when engaging f g ig f shaft within the lug 29.

In the illustrations in Figs. 1 and the operating lever is shown as provided with teeth engaging with a geared knuckle 26 as indicated at 2?. I The geared knuckle 26 is mounted on the shaft or rod 28.- The shaft 28 is turnably mounted in the lugs 29 and 30 on the cover-plate 16. To avoid boring and keying of the knuckle to the shaft, a square shaft is preferably used. the knuckle being provided with cored hole to fit on the square shaft. The turning movement being only. very short,'necessitating only a few teeth on the knuckle and on the operating lever, theknuckle can easily be cored to provide a proper engagement between the knuckle and the operat ing lever, A bushing or sleeve 3l, having a' square hole or bore is provided on the square shaft28 within the lug 29 to allow a proper turning and fitting of the square The sleeve 3]. is provided witha flange 32 seating and en gaging on one side of the lug 29. A. pin 33 beingprovided to secure the sleeve 31 v to the shaft, at the same time preventing the sleeve from shifting endwise. A handle S lls provided on the upper. end of the shaft 28. v

In Fig. 5, a slightly modified form of operating lever is illustrated, a plain barhandle 35 projectingupwardly to control the engaging ends 19. This form can, of course, only be used where the gate-valve is not very farbelowthe surface. so that the handle 35 can freely swing from side to side. In cases where the gate-valve is disposed in stand-pipes of irrigating eye tems, this form can normally not-be used,

since the handle 35 is liable to strike against thewalls of the standpipes without allowing the engaging ends 19 to fully lock or unlock, as willlbe easily understood.

The slightly modified forms" illustrated in Figs. '7, 8 and 9 can easily be used in combination withthe' turning shaft" 28, as de .scribed with reference to the illustrations in Figs; 1 and 4. :The slightly different turningknuckles 36'and 37 canbe substituted for the geared knuckle 26. The end 38 in Fig. 8 can be substituted for the geared end of the operating lever 20 as illustrated in Fig. 1 and 4. The pin-end 39 of the knuckle 36 in Fig. 7can engage with the slot 40 of the end 38 of the opera ing lever 20 in Fig.8. Instead of the slottedend 38,

a pin-like end similar to the pin-end 39 on the knuckle 36 can be provided on the lever 20 to engage with the fork-like end 41 of the knuckle 3'7 in Fig. 9. From the above, it will be. understood, the operating mechanism can be modified without materially departing from the principal points of the invention; I do not limit myself to the specific details as illustrated in the drawing but only to the principle of the invention as described above with reference to the illus trations.

Having thus described my invention, I

claim 2 1. In a gate-valve,a base-plate having a passage therethrough with a surroundmg valve seat, guiding channels on the baseplate having each one shank spaced from the face of the said valve seat, a cover-plate having an engaging face to oo-act with the valve seat and having engaging edges pro ,jecting in the opposite direction from the cover-plate to coact with the spaced shanks of the guiding channels, and an operating lever on the cover-plate having wedgeshaped engaging ends to wedge between the cover-plate and the spaced shanks, the said engaging edges being broken away to allow free movements of said lever between said cover-plate and said spaced shanks and adaptedto guide the cover-plate while the lever is in inoperative position.

2. In a gate. valve, an operating lever having a pivot support,two engaging ends projecting in opposite directions from the pivot support having wedge-like terminations, and an actuating end projecting from the pivot support sidewise of the two engaging ends having means operative by a rotating member and adapted to swing in the same plane with the engaging ends around the pivot support.

3. In a gate-valve, a base-plate having a passage theretlirough, a cover-plate for closing said passage, a locking member pivotally engaging withthe said cover-plate and disposed to press the cover-plate against the base-plate and having a' segmental gear-face projecting rearwardly, and a turning knuckle operatively engaged with the looking member.

4. In a gate-valve, a base-plate having a. passage therethrough, a cover-plate, a looking member pivotally engaged with the cover-plate fora swinging movement transversely to the said passage and having wedge-like portions for. pressing the cover- .plate against the baseplate, and a turning die-member tnrnably disposed on the coverplate traversely to the passage, and a locking member pivotally engaged With the cover-plate for a swinging movement in a plane practically parallel to the axis oi the turning handle having means to Wedge between the cover-plate and certain portions of the base-plate and having other means for operatively engaging with the tnrnable handle-membe1x 6. In a gate-valve, an operating lever having a pivot support, two locking ends having Wedge-like terminations, and an operating end in form of a segmental gear.

7. In a gate-valve, an operating lever having an operating portion in form of a segmental bevel gear facing practically in an axial direction in relation to the swinging movement of the lever.

8. In a gate-valve; a cover-plate; in nombination with the guiding channels, a base plate having a valve seat, and locking members disposed between the said coverplate and certain portions of the said guiding channels; the cover plate having an engaging face to enact with said valve-seat and having certain portions projecting in the opposite direction to slidingly engage with the said guiding channels when the looking members are in inoperative position and disposed so that the said locking members can pass in between the said cover-plate and said guiding channels for locking the cover-plate.

In testimony that I claim the foregoing as my invention I have signed my name in the presence of two subscribing Witnesses.

FRANK S. LIVINGSTON. Witnesses U H. Knnnenn, Jnssm A. MANoon. 

